Admin unable to remove a former commerce subscription purchaser in CP

[princeflight]

Description

A user successfully purchased a subscription, then unsubscribed immediately moments later.
An admin logged into the CP and browsed to the user to delete,
the success message prompted but the user still remained in the CP.

Steps to reproduce

1. Fresh installation of: Craft, Commerce Lite, Stripe for Craft Commerce
2. Setup stripe.com and create subscriptions.
3. Create subscriptions in CP
4. Create a custom registration form: https://docs.craftcms.com/v3/dev/examples/user-registration-form.html#app
5. Register through form and activate account.
6. Browse to default shop/services and purchase a subscription.
7. Go to manage your subscription and end immediately.
8. Go to CP as admin and try to delete that user.

Additional info

• Craft version: Craft Pro 3.3.6
• PHP version: 7.3.8
• Database driver & version: MySQL 5.7.26
• Plugins & versions:
  Craft Commerce 2.1.13
  Navigate 2.4.3
  reCAPTCHA 1.3.0
  SendGrid 1.1.1
  Stripe for Craft Commerce 2.1.2

[lukeholder]

Duplicate of #1022